Fastener for meeting-rails of sashes



(No Model.)

J. JL ALSDORF. FASTENBR PoR MEETING RAILS 0F s AsHEs.

No. 534,987. Patented Mar. 5, 1895.

lm Il [7H/enf@ itlivrre *arent* FFQ@ FASTENER FOR MEETING-RAILS OFSASHES.

SPECIFICATION forming part Of Letters Patent NO. 534,987', dated March5, 18915.

Application filed November l, 1894. Serial No. 527.673. (No model-l Toall whom, t may concern.-

Be it known that I, JOHN J. ALSDORF, a citizen of the United States,residing at Albany,

in the county of Albany and State of New` York, have invented certainnew and useful Improvements in Sash-Fasteners; and I do hereby declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

My invention .relates to certain new and useful improvements in sashfasteners, and has for its object the production of a cheap, simple andeffective device that may be used in place of the customary spring-armfastener, and' that affords additional security against entry byburglars.

In the accompanying drawingS,Figure l is a sectional view of the meetingrails of an upper and lower window sash illustrating my improvedfastener in its locking position therein. Fig. 2 is a perspective Viewof the fastener removed from the sash and with the operating keyremoved. Fig. 3 is a perspec- "tive view of the locking plate to besecured the operating key and the co-operatiug end of the bolt.

Similar letters of reference indicate similar parts in the severalviews.

Referring to the drawings, A indicates the lower rail of the upper sashof a window, and B the upper rail of the lower sash thereof. A recesshis cut in the rail A and a locking plate D provided with an opening tis countersunk 4in the rail and secured by means of screws or the likeso as to form a metallic guard for the recess h. The rail A is thusprovided with a substantial and effective means for engaging with thespring bolt or stem of the fastener proper, now to be described.

The rail B is bored out, as indicated, for the reception of the barrelor case a of the fastener said case having an outer square ange afitting into a corresponding countersunk portion of the rail and havingholes for the' screws wherebyit is secured in place.

Within the case a, iits snugly the sliding bolt b having a cross-head bat one end, and having an external screw thread at the other ofthespring may be increased or diminished and it may b e thus adjusted byinserting the Apin projections of an appropriate vwrench within thereceiving holes d. The bolt b is furthermore provided at its end with arecess having a screw threaded Wall, into which engages the screwthreaded end of the operating key c. The projection c on the end of thekey may also serve as a means for operating the nut d, if desired, as itis made of a size sufficient to fit one of the holes d.

In the form shown in Fig. 4, the recess in the end of the bolt, insteadof being screwthreaded, is made square or angular in cross section, andthe end-of the operating key or handle is of corresponding crosssection.

A pin f is screwed into the bolt b and moves in avslot g which is madein the case a, said slot having a forward prolongation g' for a purposeto be hereinafter described.

In Fig. 1, the fastener is shown in the locked position. To unlock it,the button cis turned toward the left thereby rotating the bolt bcorrespondingly until the pin f reaches the lower horizontal portion ofthe slot g. At this moment the bolt head b registers with the openingt', and the spring ,e draws said bolt head out of the opening and intotherecess K of the case ct. The fastener is thereby unlocked, and thesashes may be respectively' raised or lowered. During this unlockingoperation, the pin f has been drawn-back to the end of thelowerhorizontal portion of the slot g. To again lock the fastener, after themeeting rails of the sashes have been brought together, it is thereforenecessary to press the bolt inwardly by means of the button c until thepin fstrikes the vertical portion of the slot g. At the same time thebolt head b enters the openingt'of the locking plate. The button c isthen turned to the right thereby bringing the bolt head transverse tothe openingz'and locking the sashes together, as fully illustrated inFig. l.

As a safe-guard against the unlocking of the fastener by burglars, eventhough a Window pane be broken, the key c may now be entirely removedfrom the recess of the bolt. In order to do this, in the arrangementshown in Fig. l the bolt is pressed forward stillfarther until the pinfenters the slot g-, whereupon the key c may be unscrewed while the boltis thus prevented from turning. The key being removed, the spring edraws the bolt head back again into iirm contact with the inner surfaceof the plate D, holding it in the locked position against disengagementby jarring, and until released by re-inserting the key and unlocking thefastener. The eX- tension g is, of course, not required in thearrangement shown in Fig. 4, as the operating key can be withdrawn fromthe recess without turning the bolt.

If the case a were inserted at either end of the rail B, it is evidentthat locking plates having openings could be inserted at variousintervals in the side rail of the sash A, and the window thereby lockedin any position while allowing for ventilation.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

l. Afastener for window sashes and the like, consisting ot` a barrel orcasing adapted to tit a recess in the inner rail and be secured to therail, a sliding bolt mounted in said barrel, an open-ended recessin thebarrel, ahead detachably secured to the inner end of the bolt andplaying in said recess, a spring encircling the bolt and reactingbetween its head and the bottom of the recess, and a desenesi? tachablehandle or key for operating the bolt; substantially as described.

2. A fastener for window saslies and the like, consisting of a barrel orcasing adapted to it a recess in the innerrail and be secured to therail, a sliding and turning bolt mounted in said barrel, a nut screwingon the inner end of the bolt, a spring encircling the bolt and acting tokeep its outer end withdrawn within the barrel, a right-angular slot inthe barrel, a pin on the bolt playing in said slot, means for adjustingthe nut on the bolt to vary the tension of the spring, and a detachablehandle or key for operating the bolt; substantially as described.

3. A fastener for window sashes and the like, consisting of a barrel orcasing adapted to tit a recess in the inner rail and be secured to therail, a sliding and turning bolt mounted in said barrel, a head on theinner end of the bolt, a spring encircling said bolt and acting to keepits outer end Withdrawn Within the barrel, a slot in said barrel havinglongitudinal and transverse portions, a pin on the bolt playing in saidslot, a screw-threaded recess in the inner end of the bolt, a forwardprolongation g of the transverse portion of the slot in the barrel, anda detachable handle or key for operating the bolt havinga threaded endadapted to be screwed into the said threaded recess; substantially asdescribed.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN J. ALSDORF.

Witnesses: v

E. S. PRATT, C. H. THORNTON.

